Answer:
Fa = -Ff provided that the angle between Fa and Ff is zero
Explanation:
Since the net force is zero, the sum of adding all external forces onto the cart must be zero.
Assuming there is no other forces acting on the cart and Fa acting in the same plane as Fc (i.e. zero angle between acting forces),
Fa + Ff = 0
Hence
Fa = -Ff
It would be 3.15 in meters
Answer:
A. Energy
Explanation:
You can change energy from one form to another when you lift your arm or take a step. Energy is used to move matter. In this scenario, the matter would be you.
It makes the data thet they collect more reliable so if they need the data again, they have already tested it a few times so therefor they know that it is right.